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I recently put a 25det into my 32. It was all running fine until i did a little boost. After that the car started idling really high.

When you are sitting there the car starts idling at 5k and when you are driving it starts to pull by itself.

Could anyone help me with the reason why its doing this??

Cheers

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https://www.sau.com.au/forums/topic/448452-rb25det-idle-problem-help-5k/
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The engine has to get quite a bit of air to keep revs at 5k which is why i wouldn't think it could be a sensor. there sounds like something is wrong with the throttle body causing it to stay open or a big vac leak; any bolts missing on the plenum or anything?

crazy. I had a massive leak in the plenum due to a buggered gasket and it only caused a lean and hunting idle.

on boost AFRs were below 10 and it felt pretty powerless. also wouldn't reach normal boost levels

  • 2 weeks later...

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